@keyframes bgMove {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

body {
  background: linear-gradient(120deg, #0f0c29, #302b63, #24243e, #00f2ff);
  background-size: 300% 300%;
  animation: bgMove 8s ease-in-out infinite;
  font-family: "Orbitron", sans-serif;
  color: white;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  width: 700px;
  min-width: 320px;
  max-width: 98vw;
  padding: 0;
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.7);
  box-shadow: 0 0 20px #00f2ff;
  animation: fadeIn 1s ease;
  display: flex;
  overflow: hidden;
}

.tabs button {
  width: 50%;
  padding: 10px;
  background: transparent;
  border: none;
  color: white;
  font-size: 18px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}

.tabs .active {
  border-bottom: 2px solid #00f2ff;
}

.form {
  flex-direction: column;
  gap: 10px;
  flex-direction: column;
  border-radius: 10px;
  align-items: center;
  justify-content: flex-start;
  margin: 0 auto;
  display: flex;
}
.container.signup-active #signupForm {
  display: flex;
}

.glow-btn {
  background: #00f2ff;
  color: black;
  border: none;
  padding: 10px;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 0 10px #00f2ff;
  transition: transform 0, 2s ease;
}

.glow-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 0 20px #00f2ff;
}

.left-panel {
  width: 50%;
  min-width: 200px;
  background: linear-gradient(135deg, #0f0c29 60%, #00f2ff 100%);
  color: white;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 8px 10px 4px 10px;
  font-size: 2.5rem;
  font-weight: bold;
  letter-spacing: 1px;
}

.form-wrapper {
  width: 100%;
}

.form {
  width: 100%;
  padding: 20px;
  justify-content: flex-start;
  display: none;
}
.form.active {
  display: flex;
}

/* No sliding, only show active form */

@media (max-width: 768px) {
  body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
    min-height: 100vh;
    padding: 0;
  }
  .container.login-active,
  .container.signup-active {
    flex-direction: column;
  }
  .left-panel {
    width: 100%;
    min-width: 0;
    font-size: 2rem;
    padding: 8px 10px 4px 10px;
    border-radius: 10px 10px 0 0;
    text-align: center;
    justify-content: center;
    align-items: center;
    display: flex;
  }
  .form-wrapper {
    width: 100%;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: none;
    transform: none !important;
    display: flex;
  }
  .form {
    width: 90vw;
    max-width: 400px;
    padding: 15px;
    margin: 0 auto;
    box-sizing: border-box;
    align-items: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  .tabs {
    flex-direction: row;
    justify-content: center;
    gap: 0;
    margin-bottom: 10px;
  }
}

@media (max-width: 600px) {
  body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 0;
    height: 100vh;
    min-height: 100vh;
  }
  .container.login-active,
  .container.signup-active {
    flex-direction: column;
  }
  .left-panel {
    font-size: 1.1rem;
    padding: 4px 2px 2px 2px;
    border-radius: 0;
    text-align: center;
    justify-content: center;
    align-items: center;
    display: flex;
  }
  .form {
    padding: 8px;
    font-size: 0.95rem;
    width: 95vw;
    max-width: 350px;
    margin: 0 auto;
    align-items: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  .tabs button {
    font-size: 0.95rem;
    padding: 6px;
  }
  .glow-btn {
    padding: 7px;
    font-size: 0.95rem;
  }
  .tabs {
    margin-bottom: 8px;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}